<template>
  <div class="swiper-container">
    <div class="swiper-wrapper" >
      <div class="swiper-slide" v-for="(slide,index) in skuImageList" :key="slide.id" >
        <img :src="slide.imgUrl" :class="{active:currentIndex==index}" @click="changeCurrent(index)">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import Swiper from "swiper";
import 'swiper/css'
  export default {
    name: "ImageList",
    props:['skuImageList'],
    data(){
          return {
                    currentIndex: 0,
          }
    },
    watch: {
      skuImageList(){
        //延迟执行命令,在修改数据之后立即使用这个方法，获取更新后的DOM
        this.$nextTick(()=>{
         //初始化Swiper类的实例
          var mySwiper = new Swiper(this.$refs.cur, {
          //设置轮播图防线
          direction: "horizontal",
          // loop:true,
          // 如果需要前进后退按钮
          navigation: {
            nextEl: ".swiper-button-next",
            prevEl: ".swiper-button-prev",
          },
          //展示区域同时展示三张图片
          slidesPerView: 2,
        });
        })
      }
    },
    methods:{
      changeCurrent(index){
        this.currentIndex = index;  
        //通知兄弟组件(Zoom)当前索引值
        this.$bus.$emit('getIndex',index)
      }
    }
  }
</script>

<style lang="less" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        // &:hover {
        //   border: 2px solid #f60;
        //   padding: 1px;
        // }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>